# CVE-2018-19351: jupyter-notebook: Jupyter Notebook before 5.7.1 allows XSS via an untrusted notebook because nbconvert responses are considered to have...

CVE-2018-19351 is fixed in 3 products on 1 platform, first by jupyter-notebook 5.2.2-1ubuntu0.1, released March 31, 2022. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2018-19351
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0151
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Nov 18, 2018

## Description

Jupyter Notebook before 5.7.1 allows XSS via an untrusted notebook because nbconvert responses are considered to have the same origin as the notebook server. In other words, nbconvert endpoints can execute JavaScript with access to the server API. In notebook/nbconvert/handlers.py, NbconvertFileHandler and NbconvertPostHandler do not set a Content Security Policy to prevent this.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | jupyter-notebook Ubuntu 18.04.6 LTS (bionic) | 5.2.2-1ubuntu0.1 | [jupyter-notebook 5.2.2-1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-jupyter-notebook-5.2.2-1ubuntu0.1.md) | Mar 31, 2022 |
| Linux | python-notebook Ubuntu 18.04.6 LTS (bionic) | 5.2.2-1ubuntu0.1 | [python-notebook 5.2.2-1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python-notebook-5.2.2-1ubuntu0.1.md) | Mar 31, 2022 |
| Linux | python3-notebook Ubuntu 18.04.6 LTS (bionic) | 5.2.2-1ubuntu0.1 | [python3-notebook 5.2.2-1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python3-notebook-5.2.2-1ubuntu0.1.md) | Mar 31, 2022 |

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